MathematicsBeginner

What a proportion is

Outer product equals inner product

Estimated time · 8 min 10 Content blocks

Core concepts

Formulas

ab=cd  ⟺  ad=bc\frac{a}{b}=\frac{c}{d} \iff ad = bc

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Glossary

Outer terms
Inner terms

Prerequisites

What a ratio is8 min
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